Now, those features in itself are pretty exciting, however, the good news is that all other than iPhone 4 users, iPhone 3GS, iPhone 3G and iPod touch excluding first generation users will also get a free update to iOS4 on June 21st.

This is definitely good news since iOS4 brings in a host of features which are definitely worth using. So set your calendars then to June 21st and fire up iTunes to get your free update to iOS4.

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